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单选题
642.氧气系统渗漏测试使用( ) What gas is use to oxygen system leakage test?
A
氧气源 the oxygen source
B
氮气源 the Nitrogen source
C
氢气源 The hydrogen source
答案解析
正确答案：B
解析：
氧气系统渗漏测试使用( ) What gas is use to oxygen system leakage test?
答案:B
解析: 氧气系统渗漏测试使用氮气源 (the Nitrogen source)。通常在氧气系统渗漏测试中，使用氮气来代替氧气，因为氮气是一种惰性气体，不会支持燃烧，也不会对系统造成危险。通过使用氮气，可以安全地检测氧气系统是否存在渗漏问题，而不会引发火灾或其他安全风险。
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